Method for acquiring resistance of power station or transformer substation grounding grid with karst geological and geomorphic characteristics

The invention discloses a method for acquiring a resistance of a power station or transformer substation grounding grid with karst geological and geomorphic characteristics. The method comprises the following steps of: step I, determining a grounding soil resistivity and a test point; step II, calcu...

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Hauptverfasser: CHEN QIAN, CHEN TANGXIAN, FAN SHENGHAI, XING HANG, ZHOU YIHUI, LIU YANFANG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a method for acquiring a resistance of a power station or transformer substation grounding grid with karst geological and geomorphic characteristics. The method comprises the following steps of: step I, determining a grounding soil resistivity and a test point; step II, calculating a resistance of a main grounding grid; step III, calculating a resistance of an auxiliary grounding grid for reducing a soil resistivity; and step IV, calculating the resistance of the power station or transformer substation grounding grid with the karst geological and geomorphic characteristics. According to the method for acquiring the resistance of the power station or transformer substation grounding grid with the karst geological and geomorphic characteristics, two technical problems of non-uniform soil resistivity and ultrahigh soil resistivity of the grounding grid with the karst geological and geomorphic characteristics are solved. 种喀斯特地质地貌特征的电站或变电站接地网电阻值的获得方法,包括以下步骤:步骤、确定接地土壤电阻率及测试点;步骤二、计算主接地网的电阻值;步